--- service: i.root-servers.net start-period: '2014-03-19T00:00:00Z' end-period: '2014-03-20T00:00:16Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2781224694 dns-udp-queries-received-ipv6: 195904531 dns-tcp-queries-received-ipv4: 6316815 dns-tcp-queries-received-ipv6: 336140 dns-udp-responses-sent-ipv4: 2722706055 dns-udp-responses-sent-ipv6: 195604026 dns-tcp-responses-sent-ipv4: 6332031 dns-tcp-responses-sent-ipv6: 337473